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…………….arises due to either ingeritance o...

…………….arises due to either ingeritance of only X chromosome from parents or due to inactivation of the gender-related part of X-chromosomes.
Down syndrome
Turner syndrome
Klinefelter syndrome
Albinism

A

Down syndrome

B

Turner syndrome

C

Klinefelter syndrome

D

Albinism

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Note the relationship between the first two words and suggests suitable words in the fourth place: Down's syndrome: 47 chromosomes : Turner's syndrome:……….

State whether the following statements are true or false. Correct the false statement: Down syndrome is caused due to monosomy of X chromosome.

Identify the INCORRECT statements from the following. (i)Lysosomal enzymes do not digest their own membrane proteins. (ii)Accidental release of lysosomal enzymes in limited amount does not harm the cell because pH of cytosol is near neutral. (iii) Any insufficiency in secretion of lysosomal enzymes leads to disorders e.g. in genetic disorder- Klinefelter syndrome. (iv) Due to insufficiency of protease brain gets impaired resulting from accumulation of fats.

During a medical investigation an infant was found to possess an extra chromosome 21 . Describe the symptoms the child is likely to develop later in life. Why in females exceeding 40-45 years of age are children with Down's syndrome more likely to be born.

Complete the analogy: 44 + X: Turner syndrome : : 44 + XXY :………….

CHETANA PUBLICATION-HEREDITY AND VARIATION-EXAMPLE
  1. …………….arises due to either ingeritance of only X chromosome from paren...

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  2. Find the odd man out: Axillary flower, green pod, green seed, inflat...

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  3. Find the odd man out: Constricted pod, purple flower, axillary flowe...

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  4. Find the odd man out: Green seeds, wrinkled seeds, terminal flower, ...

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  5. Find the odd man out: Attached ear lobes, brown and straight hair, ...

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  6. Find the odd man out: Cystic fibrosis, albinism, spina bifida, sickl...

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  7. Find the odd man out: Hutchinson's disease, phenylketonuria, nightbl...

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  8. Give scientific reasons: DNA molecules are called as 'Master molecule...

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  9. Give scientific reasons: Phenotypic and genotypic ratios are differen...

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  10. Give scientific reasons: A carrier or sufferer of sickle-cell anaemia...

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  11. Give scientific reasons: Mitochondrial disorders are inherited from t...

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  12. Give scientific reasons: Tobacco smoking causes cancer.

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  13. Define the following terms : Gene

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  14. Define the following terms : Chromosome

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  15. Define the following terms : Genetics

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  16. Define the following terms : Heredity

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  17. Define the following: Homologous Chromosomes

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  18. Distinguish between: DNA and RNA

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  19. Distinguish between: Monohybrid Cross and Dihybrid Cross

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  20. Differentiate between Turner's syndrome and Klinefelter's syndrome.

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  21. Write short notes on: Down syndrome

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